Storage Oscilloscopes can only measure circuits that has a triggered event?

[danny davis]

If a circuit is triggered by an event, input voltage or current, my manager said I have to use a storage o-scope because the circuit is triggered by an event is this true cant use a non- storage scope?

When a circuit is triggered by an event, what does that mean?

What can the EVENT be to trigger a circuit? please give examples

 

[keith1200rs]

Storage oscilloscopes are useful where events happen infrequently as a normal analog oscilloscope may not show a visible trace. Analog storage oscilloscopes exist although I doubt they are made now. They stored the waveform with a modified CRT. Digital storage is the norm now.

Keith

 

[danny davis]

Storage oscilloscopes are useful where events happen infrequently as a normal analog oscilloscope may not show a visible trace.

What do you mean by events happen Infrequently?

Why can't you use a normal non storage oscilloscope for this?

 

[keith1200rs]

A CRT has a limited persistence time so when you run the timebase slowly - say one a second sweep - all you will see is a dot moving across the screen. It will not stay illuminated long enough to see a line. This makes it difficult to see what you want to see. Analog storage oscilloscopes have a longer, adjustable persistence.

Even a fast sweep would be difficult to see on a CRT if the even doesn't repeat very often e.g. If you had a 1us sweep but the event only happened once every second.

Keith